Ship item nicknames, Tiny fear override, and ensure-match API.

Add 冰眼/蛇矛 aliases, correct Tiny fears to Hydra's Breath, and fix production match detail POST 405.

Co-authored-by: Cursor <cursoragent@cursor.com>

web/fetch_items_meta.py

@@ -1,5 +1,7 @@
 """Fetch shop item descriptions and mechanism tags into data/items_meta.json.
 
+Also merges Chinese nicknames from data/item_alias_overrides.json → aliases.
+
 Sources:
   - OpenDota items.json (structure, EN ability text)
   - Valve itemlist / itemdata (schinese names + descriptions)
@@ -43,6 +45,7 @@ ICON_URL = (
 )
 OUT = DATA / "items_meta.json"
 OVERRIDES = DATA / "item_tag_overrides.json"
+ALIAS_OVERRIDES = DATA / "item_alias_overrides.json"
 
 MIN_CREATED_COST = 1400
 ALWAYS_CORE = frozenset({"blink", "aghanims_shard", "gem", "dust", "ghost"})
@@ -262,6 +265,38 @@ def apply_overrides(key: str, tags: list[str], overrides: dict[str, dict]) -> li
     return merge_tag_overrides(tags, overrides.get(key), TAG_ORDER)
 
 
+def load_alias_overrides() -> dict[str, list[str]]:
+    """key → Chinese nicknames (冰眼 / 蛇矛); empty if file missing."""
+    if not ALIAS_OVERRIDES.is_file():
+        return {}
+    try:
+        raw = json.loads(ALIAS_OVERRIDES.read_text(encoding="utf-8"))
+    except (OSError, json.JSONDecodeError):
+        return {}
+    out: dict[str, list[str]] = {}
+    for key, aliases in (raw.get("items") or {}).items():
+        if not isinstance(aliases, list):
+            continue
+        clean = [str(a).strip() for a in aliases if str(a).strip()]
+        if clean:
+            out[str(key)] = list(dict.fromkeys(clean))
+    return out
+
+
+def apply_alias_overrides(items_out: dict[str, dict], aliases: dict[str, list[str]]) -> None:
+    for row in items_out.values():
+        if not isinstance(row, dict):
+            continue
+        key = str(row.get("key") or "")
+        if not key:
+            continue
+        nick = aliases.get(key)
+        if nick:
+            row["aliases"] = list(nick)
+        else:
+            row.pop("aliases", None)
+
+
 def main() -> None:
     ap = argparse.ArgumentParser(description=__doc__)
     ap.add_argument("--delay", type=float, default=0.15)
@@ -301,6 +336,7 @@ def main() -> None:
             pass
 
     overrides = load_overrides()
+    alias_overrides = load_alias_overrides()
     items_out: dict[str, dict] = {}
     pending = []
     for iid in sorted(candidates):
@@ -408,6 +444,7 @@ def main() -> None:
         }
         write_json_atomic(args.out, payload)
 
+    apply_alias_overrides(items_out, alias_overrides)
     payload = {
         "meta": {
             "source": "valve+opendota",